2026-07-19T17:46:17Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/AE_L2A.0032026-06-24T19:16:13Zcumulusecsretirednasa_nsidc_daac
AE_L2A.003AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness TemperaturesAshcroft, P. & Wentz, F. J.AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures2013-06-11Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center3false10.5067/AMSR-E/AE_L2A.003https://nsidc.org/sites/default/files/ae_l2a-v003-userguide_0.pdfAE_L2ATechnical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAInvestigatorPeterAshcroftashcroft@remss.com1-707-545-29041-707-545-2906Remote Sensing Systems438 First StreetSuite 200Santa RosaCA95401USAInvestigatorFrankJ.Wentzwentz@remss.com1-707-545-29041-707-545-2906Remote Sensing Systems438 First StreetSuite 200Santa RosaCA95401USAEARTH SCIENCESPECTRAL/ENGINEERINGMICROWAVEBRIGHTNESS TEMPERATURE EARTH SCIENCESPECTRAL/ENGINEERINGMICROWAVEMICROWAVE IMAGERY AE_L2AAMSR-EAMSR-E-projectAquaDAACEOSDISEOS PM-1ImageryNASANSIDCPassive MicrowaveRadianceRadiometersRemote SensingSpatially Resampled Brightness Temperaturesspatial resolutionsTbAMSR-EAdvanced Microwave Scanning Radiometer-EOSAQUAEarth Observing System, AQUA2002-06-012011-10-04deprecated-89.2489.24-180180Geographic RegionGlobalVariesVaries50 minuteThe AMSR-E Level-2A product follows the granule conventions designed and set in L-1A. Each file provides some overlap to the previous and next file. This supports the ability to do 1 to 1 file processing. The overlap provides each granule with a ~10 scan look into the forward and backward neighboring files.
This ~10 scan overlap at the edges of the file belongs with the neighboring files, and eliminates the need to open and read the files before and after the file in use. When deciding which portion of the overlap to use, choose the half of the overlap that is contiguous with the swath in the file and ignore the overlap at the edge of the file.EnglishNASA/MSFC/AMSR-E SIPSNASA NSIDC DAACNASA National Snow and Ice Data Center Distributed Active Archive Centerhttps://nsidc.org/daacData Center ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-6199National Snow and Ice Data CenterCIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAHTTPS58 MBHDF-EOS2Ashcroft, P. and F. Wentz. 2000. Algorithm Theoretical Basis Document for the AMSR Level 2A Algorithm, Revised 03 November. Santa Rosa, CA, USA: Remote Sensing
Systems.
Conway, D. 2002. Advanced Microwave Scanning Radiometer - EOS Quality Assurance
Plan. Huntsville, AL: Global Hydrology and Climate Center. Marquis, M., R. Armstrong, P. Ashcroft, M.J. Brodzik, D. Conway, S.J.S. Khalsa, E. Lobl, J. Maslanik, J. Stroeve, and V. Troisi. 2002. Research applications and opportunities using Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) data (poster). International Society for Optical Engineering Symposium (SPIE), Hangzhou, China, October 23-27, 2002.The AMSR-E Level-2A product (AE_L2A) contains brightness temperatures available at a variety of resolutions that correspond to the footprint sizes of the observations. Each swath is packaged with associated geolocation fields.VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/ae_l2a-v003-userguide_0.pdfAMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures, Version 3 User GuideGET DATAhttps://nsidc.org/data/data-access-tool/AE_L2A/versions/3/Data Access ToolVIEW RELATED INFORMATIONhttps://nsidc.org/data/amsre/AMSR-E Product Web SiteVIEW RELATED INFORMATIONhttps://weather.msfc.nasa.gov/AMSR/NASA AMSR-E web siteVIEW RELATED INFORMATIONhttps://nsidc.org/data/nsidc-0301.htmlAMSR-E/Aqua Daily EASE-Grid Brightness Data SetVIEW RELATED INFORMATIONhttps://nsidc.org/data/nsidc-0302.htmlAMSR-E/Aqua Daily Global Quarter-Degree Gridded Brightness Temperatures Data SetUSA/NASACEOS IDN DIFVERSION 9.92013-06-112026-06-24NSIDCVersion Summary<p>Changes to this algorithm include:<br>
Complete recalibration to RSS Version 7 standard, as follows:</p>
<ul>
<li>Intercalibration with other microwave radiometers, particularly SSM/I F13 and WindSat </li>
<li>Calibration with improved Radiative Transfer Model (RTM): RSS RTM Version 2011</li>
<li>Updated ocean emissivity model (<a href="/data/amsre/research.html#meissner_2012">Meissner and Wentz 2012</a>)</li>
<li>Adjustment of the water vapor and oxygen absorptions, particularly the water vapor continuum absorption</li>
<li>Improved calibration over land, based on heavily vegetated tropical rainforest scenes</li>
<li>Nonlinearity correction at 18.7 GHz, brightness temperatures approx. 2 degrees K lower over land</li>
<li>Adjustment to Antenna Pattern Coefficients (APC) for cross-polarization and spillover</li>
<li>Slight shift to the 18.7 GHz center observation frequency</li>
<li>Adjustment of effective hot-load temperature</li>
</ul>
<p>Improved Radio Frequency Interference (RFI) flagging in response to new geostationary sources. For more details, see the <a href="http://www.remss.com/about/projects/radio-frequency-interference">Remote Sensing Systems RFI page</a>:</p>
<ul>
<li>Replacement of the Geostationary_Satellite_Glint_Angle field with two new fields:<br>
Geostationary_Reflection_Latitude<br>
Geostationary_Reflection_Longitude</li>
<li>For each observation, L2A now includes the location where the reflection vector intersects the geostationary sphere</li>
</ul>NSIDCMinor VersionNSIDCLevel of ServiceNo Data AccessNSIDCFull Dataset CitationAshcroft, P. & Wentz, F. J. (2013). <i>AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures</i>. (AE_L2A, Version 3). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/AMSR-E/AE_L2A.003">https://doi.org/10.5067/AMSR-E/AE_L2A.003</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredtrueNSIDCRelated Toolsapplication/vnd.nasa.cmr.umm+jsonfalsefritzdimmt_tool_50907TL3010466318-NSIDC_CPRDNSIDC_CPRD5tool2026-06-24T18:30:53.034Zhttps://zenodo.org/badge/latestdoi/399867529DOWNLOAD SOFTWAREhttps://earthaccess.readthedocs.io/en/stable/DistributionURLNSIDC_CPRD_EARTHACCESSDownloadable Tool0.18.0earthaccessearthaccess is a python library to search and access NASA Earth science data with just a few lines of code.https://github.com/earthaccess-dev/earthaccessVIEW RELATED INFORMATIONGitHub RepositoryPublicationURLDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA SEARCHDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESPUBLISHERNSIDC DAAC User ServicesEmailnsidc@nsidc.orgPUBLISHERNASA National Snow and Ice Data Center Distributed Active Archive Centerhttps://nsidc.org/daac/NASA NSIDC DAACPUBLISHERNational Snow and Ice Data Centerhttp://nsidc.orgNSIDCDEVELOPERAlaska Satellite Facilityhttps://www.asf.alaska.edu/ASFDEVELOPERInstitute for the Study of Earth, Oceans, and Space, University of New Hampshirehttp://www.eos.unh.edu/UNH/EOSDEVELOPERAtmospheric Science Data Center, Science Directorate, Langley Research Center, NASAhttps://asdc.larc.nasa.gov/NASA/LARC/SD/ASDCMIT License
Copyright (c) 2021 Luis Lopez
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SOFTWARE.2026-05-12T00:00:00.000ZAs a condition of use, we request that you properly cite the earthaccess library to acknowledge the creators. Formal citations also make it easier for us to track the use and impact of our data and tools, and helps us report data distribution activity and tool usage metrics to funding agencies.
If you have used earthaccess in your research, please cite as:
Barrett, A., Battisto, C., Bourbeau, J., Fisher, M., Kaufman, D., Kennedy, J., Lopez, L., Lowndes, J., Scheick, J., & Steiker, A. (2024). earthaccess (Version 0.9.0) [Computer software]. https://doi.org/10.5281/zenodo.8365009
See https://github.com/nsidc/earthaccess/releases for more information on the latest version.https://cdn.earthdata.nasa.gov/umm/tool/v1.0UMM-T1.0Python3.8 or higherhttps://earthaccess.readthedocs.io/en/stable/application/vnd.nasa.cmr.umm+jsonfalsecrumlydmmt_tool_13636TL3915896594-NSIDC_CPRDNSIDC_CPRD1tool2025-12-16T18:39:31.244ZDOWNLOAD SOFTWAREhttp://hdfeos.org/zoo/index.phpDistributionURLNSIDC_CPRD_HDF-EOS_Tools_Info_CenterDownloadable Tool1HDF-EOS Code ExamplesUse example Python, MATLAB, IDL, or NCL code to import, read, and/or visualize select NSIDC DAAC data products.DATA VISUALIZATIONDATA ANALYSIS AND VISUALIZATIONEARTH SCIENCE SERVICESDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESSERVICE PROVIDERNSIDC DAAC User ServicesEmailnsidc@nsidc.orgAUTHORDEVELOPERPUBLISHERSERVICE PROVIDERHDF-EOS Tools and Information CenterEmaileoshelp@hdfgroup.orgAUTHORDEVELOPERPUBLISHERSERVICE PROVIDERHierarchical Data Format, The National Center for Supercomputing Applications, University of Illinois at Urbana-Champaignhttps://www.hdfgroup.org/UI-UC/NCSA/HDFThis is the most current release of this tool. Last updated date is unknown.https://cdn.earthdata.nasa.gov/umm/tool/v1.0UMM-T1.0MATLABPythonIDLhttp://hdfeos.org/zoo/index.php